Matter & Energy
This tiny structure's nucleus contains protons and neutrons and is surrounded by a cloud of electrons.
Atom
This type of force, like gravity or magnetism, can pull or push on an object without actually touching it.
Non-contact force
This specific property of a wave is directly related to the amount of energy it carries.
Amplitude
This invisible force is the "glue" that holds our solar system together and controls the motions of galaxies.
Gravity
These are the basic units of life that make up all living things, whether they are single-celled or multicellular.
Cells
These structures, such as sodium chloride, are formed when individual atoms of the same or different types repeat in a specific pattern.
Extended Structures
According to Newton’s Third Law, these two types of forces are equal in strength but move in opposite directions during a collision.
Action and reaction forces
This interaction occurs when a wave bounces off a surface, such as an echo or a reflection in a mirror.
Reflection
Our solar system is just one of many systems orbiting the center of this large galaxy.
The Milky Way
In an ecosystem, the growth of organisms and populations is limited by their access to these.
Resources
Kinetic energy has a direct relationship with these two properties of a moving object.
Mass and Speed
These forces are equal in size but opposite in direction and do not cause any change in an object's motion.
Balanced Forces
These two wave properties can be changed to alter the "expression" of the wave, such as changing the pitch of a sound.
Frequency and wavelength
Variations in the amount of the sun’s energy hitting the Earth’s surface due to its tilt result in this reoccurring pattern.
Seasons
These specialized structures within a cell are responsible for specific functions that help the cell work as a whole
Cell components (or organelles)
This type of energy is stored in a system when the distance or arrangement of interacting objects changes.
Potential Energy
A change in an object’s motion is determined by the mass of the object and the sum of these acting upon it.
Forces
This wave behavior describes energy being taken in by a material, like sound hitting a thick curtain
Absorption
The Earth-moon system takes this much time to complete one full orbit around the sun.
One Year (365 days)
This is the biological process used by producers to create the energy that they then provide to consumers in an ecosystem.
Photosynthesis
Scientists use these types of displays to describe the relationship between an object's kinetic energy, mass, and speed.
graphical displays (or graphs)
This contact force acts between surfaces that are touching and works against motion to slow objects down.
Friction
This term describes a wave "bending" as it passes from one material, like air, into another, like water.
Refraction
Scientists determine these by analyzing data like photographs and statistics to compare the sizes and distances of planets.
Scale Properties
This process describes how matter is cycled repeatedly between the living and nonliving parts of an ecosystem.
matter cycle